3/4" x 18” Galvanized L-Bolts or “Sill Plate Bolts” are used in wet concrete, typically used to attach sill plates to the foundation walls. These L-Shaped bolts are also used to support lightweight post bases, poles, signage and other structures built on top of concrete. Our high quality anchor bolts are domestic products that are proudly made here in the USA. These HDG L-Bolts should be used with the correct Galvanized Hex Nuts and Galvanized Washers.